Method for time aligning audio signals using...

G - Physics – 10 – L

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G10L 11/00 (2006.01) G10L 15/04 (2006.01) G10L 17/00 (2006.01) H04N 5/04 (2006.01) H04N 5/60 (2006.01)

Patent

CA 2448178

A method for time aligning audio signal, wherein one signal has been derived from the other or both have been derived from another signal, comprises deriving reduced-information characterizations of the audio signals, auditory scene analysis. The time offset of one characterization with respect to the other characterizationis calculated and the temporal relationship of the audio signals with respect to each other is modified in response to the time offset such that the audio signals are coicident with each other. These principles may also be applied to a method for time aligning a video signal and an audio signal that will be subjected to differential time offsets.

La présente invention concerne un procédé de synchronisation de signaux audio, où un signal a été dérivé d'un autre ou les deux ont été dérivés d'un autre signal. Ledit procédé consiste à dériver des caractérisations d'informations réduites des signaux audio, les caractérisations d'informations réduites étant basées sur l'analyse auditive de scène. Le décalage temporel d'une caractérisation par rapport à l'autre caractérisation est calculé et la relation temporelle des signaux audio les uns par rapport aux autres est modifiée en réponse au décalage temporel, de sorte que les signaux audio coïncident les uns avec les autres. Ces principes peuvent également être appliqués à un procédé de synchronisation d'un signal vidéo et d'un signal audio qui est soumis à des décalages temporels différentiels.

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